A160126 - cp's OEIS frontend

A160126 Total number of squares and rectangles in the toothpick structure after n stages, divided by 2. (See A139250).

n	a(n)
0	0
1	0
2	0
3	1
4	2
5	2
6	4
7	9
8	12
9	12
10	14
11	18
12	20
13	22
14	32
15	47
16	54
17	54
18	56
19	60
20	62
21	64
22	74
23	88
24	94
25	96
26	104
27	114
28	120
29	134
30	170
31	209
32	224
33	224
34	226
35	230
36	232
37	234
38	244
39	258
40	264
41	266
42	274
43	284
44	290
45	304
46	340
47	378
48	392
49	394
50	402
51	412
52	418
53	432
54	466
55	500
56	514

[0, 0, 0, 1, 2, 2, 4, 9, 12, 12, 14, 18, 20, 22, 32, 47, 54, 54, 56, 60, 62, 64, 74, 88, 94, 96, 104, 114, 120, 134, 170, 209, 224, 224, 226, 230, 232, 234, 244, 258, 264, 266, 274, 284, 290, 304, 340, 378, 392, 394, 402, 412, 418, 432, 466, 500, 514]

cp's OEIS Frontend

A160126 Total number of squares and rectangles in the toothpick structure after n stages, divided by 2. (See A139250).

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	2
5	2
6	4
7	9
8	12
9	12
10	14
11	18
12	20
13	22
14	32
15	47
16	54
17	54
18	56
19	60
20	62
21	64
22	74
23	88
24	94
25	96
26	104
27	114
28	120
29	134
30	170
31	209
32	224
33	224
34	226
35	230
36	232
37	234
38	244
39	258
40	264
41	266
42	274
43	284
44	290
45	304
46	340
47	378
48	392
49	394
50	402
51	412
52	418
53	432
54	466
55	500
56	514

n	a(n)
0	0
1	0
2	0
3	1
4	2
5	2
6	4
7	9
8	12
9	12
10	14
11	18
12	20
13	22
14	32
15	47
16	54
17	54
18	56
19	60
20	62
21	64
22	74
23	88
24	94
25	96
26	104
27	114
28	120
29	134
30	170
31	209
32	224
33	224
34	226
35	230
36	232
37	234
38	244
39	258
40	264
41	266
42	274
43	284
44	290
45	304
46	340
47	378
48	392
49	394
50	402
51	412
52	418
53	432
54	466
55	500
56	514

n	a(n)
0	0
1	0
2	0
3	1
4	2
5	2
6	4
7	9
8	12
9	12
10	14
11	18
12	20
13	22
14	32
15	47
16	54
17	54
18	56
19	60
20	62
21	64
22	74
23	88
24	94
25	96
26	104
27	114
28	120
29	134
30	170
31	209
32	224
33	224
34	226
35	230
36	232
37	234
38	244
39	258
40	264
41	266
42	274
43	284
44	290
45	304
46	340
47	378
48	392
49	394
50	402
51	412
52	418
53	432
54	466
55	500
56	514